Adobe AIR Debug Launcher has stopped working in League Of Legends

I am a player of League Of Legends,and I always get the crash with a message of "Adobe AIR Debug Launcher has stopped working" in the game lobby .This is annoying and affect me so much.

As I found ,the LOL client is using the AIR of 3.1.0.4880. i have tried to update the AIR to 3.4 and copy the file to the LOL folder,but it is useless .can someone help me to solve it?